Spbayes



y 1933- A. A. BREUER 1,911,603

SPRAYER Filed Aug. 20, 1931 2 Sheets-Sheet 2 Patented May 30, 1933UNITED STATES ADAM A. BREUEB, OF CHICAGO, ILLINOIS SPRAYEL Applicationfiled .August 20, 1931. Serial No. 558,248.

The present invention relates to a sprayer and more particularly to a"small compact portable for spraying liquids.

An object of the present invention is to provide acompact readilyportable and usable sprayer which will eifectively discharge liquid inthe form of a fine mist.

Another object of the invention is" to provide a sprayer unit consistingof a motor, air

' compressor, and liquid container, all axially arranged for compactnessand ease of operation and use.

A further object if the invention is to provide a portable sprayerwherein the liquid is discharged solely by ejector action.

Generally speaking the invention contemplates a unit consisting ofmotor, motor casing, compressor and liquid container, all axiallyarranged in compact form.

The invention further contemplates an outlet conduit communicating withthe interior of the receptacle, having a discharge orifice adjacent thedischarge orifice from the compressor portion so that the containedliquid is discharged with ejector action.

The invention further contemplates the use of a compressor including achamber with a rotor therein which rotor is provided with blades vorvanes which move outwardly 0 under centrifugal action as the rotor isrotated by the motor, the vanes or blades actin to compress the airwithin the chamber an discharge the same through the air dischargenozzle.

The above other and further objects of the invention will be apparentfrom the following description, accompanying drawings, and appendedclaims.

The accompanying drawings illustrate a.

sprayer embodying the principles of the present invention and the viewsthereof are as follows:

Figure 1 is a vertical central sectional view through a sprayer unitembodying the principles of the present invention.

Figure 2 is a bottom plan view of the compressor member showing thecompressor chamber and the rotor and heat radiating o fins. This viewhas eliminated therefrom a 5 bottom plate for the rotor which forms atrie supply.

part of the compression chamber, the plate being removed for conveniencein illustrating details of construction.

Figure 3 is a. fragmental sectional vlew taken substantially in theplane of line .55 III1II of Figure 1 and showing details ofconstruction.

The form of apparatus shown to exemplify the present invention comprisesa motor casing 1 to which is attached a hollow handle 2 having therein aswitch 3 which is suitably connected to the usual conductors not shownfor putting the motor in circuit with an elec-.

The motor is designated generally as A and is provided with the usualmotor shaft 4, vertically disposed, the upper end of which is supportedin bearing 5 in the casing 1 and the lower end of which extends througha lower bearing 6 where its outer end is slotted at 7 The motor shaft isprovided with fan blades 8 for cooling the motor in operation. Thecasing 1 is provided with'air inlet holes 9 for the admission of air tothe interior of the casing for cooling purposes. '7 The compressormember in the present instance consists of a casting B having a flangeportion 10 which is secured to the motor casing 1 by screws or bolts 11and which is provided. with a plurality of cooling fins 12 which arecentrally connected to a centrally disposed hub or boss 13. This bossextends upwardly at 14 to receive the bearing 6 and downwardly for theformation therein of the compressor chamber. The compressor, chamber 15is 'a bor formed in the boss 13 which is somewhat elliptical in outlineand being eccentrically arranged with respect to the axis of the motorshaft 4. The compressor member B is cast preferably from aluminum forthe sake of lightness in which event the compressor chamber15 isprovided with a cast iron lining 16 which is put in place in the mold atthe time the member B is cast so that the aluminum constituting saidcasting is cast about the lining 16. In this manner the hardenedinterior surface or lining is provided for the compressor chamber.

The rotor 17 consisting of a cylindrical are shown, which intersect theradii of the rotor and extend inwardly from the surface of the rotor topoints near the rotor center. -In everyone of these slots 19 is a bladeor vane 20 having its outer end curved to conform to the contour of thecompressor chamber 15. These blades or vanes move outwardly undercentrifugal action whenever the rtor 17 is rotated by the motor. Theouter ends of the blades or vanes closely conforming to the sides orlining of the compressor chamber and move inwardly as the vanes approachthat portion of the motor chamber which is substantially in contact witha portion of the side surface of the rotor as it is for a part of thetravel of the same.

The casting B is provided with an inlet port 21 communicating with thecompressor chamber and an outlet port 22 also communicating with thecompressor chamber 15 0 but disposed at approximately 180 from the inletport in the direction of travel of the rotor. An air discharge nozzle 23is inserted in the end of the air outlet port 22.

Figures 2 and 3 illustrate various positions of the blades or vanesassumed by the blades in various positions of rotation of the rotor.

It will be observed that the air inlet communicates with the aircompressor chamber 15 at the beginning of the zone of greatest capacitywhereas the air outlet 22 communicates' therewith at the zone of, leastcapacity or at the point of maximum compression. In this manner,successful air compression is accomplished by a rotor of the characterherein subscribed and illustrated.

The bottom of the compressor chamber 15 1s formed by a plate 24 which isfastened against the bottomv side of the member B,

) by screws engaging screwholes 25 therein formed. The several fins 12are cut at 26 to receive the plate so that the same may enter and seatagainst the bottom of the boss 13 of them-amber B.

A block 27 having an L-shaped passage 28 therethrough is applied againstthe plate 24. Communicating with one end of the passa e 28 is a pipe 29which extends downwardly into the interior of the liquid container 30.The pipe 29 may be straight as shown in full lines in Fi ure 1 or mayhave its lower end curved as s own in dotted lines in said figure. Thispipe is threaded into the block 27 to communicate with the passage 28.

'55 Another pipe 31 is threaded into the other end of the passage 28-andextends outwardly V of the block 27 with the outer end of the pipeclosed asat 32, with a lateral discharge out-. let 33. The orifice ofthe discharge outlet 33 s disposed adjacent the orifice of the dischargenozzle 23 from the compressor chamber so that whenever the compressor isactuated liquid willbe discharged from the container-30 by ejectoraction.

The pipe 31 and its discharge orifice 33 are so related and arranged inthe block 27 as to be susceptible of imparting a slight swingingmovement to the outlet 33 to vary the effectiveness of the ejectoraction. This is possible because the pipe 31 is threaded into the block27, and is fitted loose enough for such adjustment. That is, if this ismoved sideways a little bit, then the discharge will be less than if theorifice is directly in front of the orifice in the outlet nozzle 23.

The container 30 is provided with a threaded neck 34 which cooperateswith a threaded can top 35 retained against the block 27 by a washer 36of cork or like substance to effect a tight sealing, which washer andtop are retained against the block by means of screws 37 which passthrough the block 27 and engage the casting B. i

It will be obseryed that the axis of the container 30 and of the motor Aare. axially aligned thus making a compact balance and readily usablesprayer unit.

I The'dis'charge of the liquid by ejector action createsa fine mistydischarge which is especially useful when the sprayer is used todischarge insecticide or like liquid, and where a misty discharge isdesired. Utilization of the ejector action for discharging the containedliquid enables discharge of the liquid even when the container 30 isdisconnected from its top andheld a slight distance therefrom as theejector action is sufiicient to lift the liquid and discharge the sameeven though the contents of the container 30 be exposed to theatmosphere The unit as manufactured is made of light material such asaluminum so as to be readily and handily usable for spray dischargewithin a room when used with insecticide. It is equally useful inconnection with the spray discharge of other liquids dischargeable withsuch a sprayer as this.

The utilization of the iron lining 16 for the compressor chamber enablesthe use of aluminum in forming the compressor member B as otherwise werethere no such lining as the cast iron lining 16, the action of the rotorwould very quickly spoil the walls of the compressor chamber and renderthe whole device objectionable.

- The gist of the present invention consists in the provision of meansin a sprayer unit for discharging liquid with ejector action.

The invention has been described herein more or less precisely as todetails, yet it is to be understood that the invention is not to belimited thereby as changes maybe made in the arrangement and proportionof parts, and equivalents may be substituted without departing from thespirit and scope of the invention. f The invention as claimed is asfollows:

1. A portable sprayer of the type adapted to beheld in a hand of anoperator for use,

said sprayer including a motor casing and a compressor casing andcontainer receiver means arranged in vertical axial alinement with themotor casing at the top; a pistol-like handle connected to the motorcasing, said compressor casing having a counter bore constituting arotor chamber, a, rotor in the chamber, said container receiver meanspro.- viding means forming a closure for the rotor chamber, a containerin removably secured engagement with "said "container receiver means,and conduitmeans communicatin with the interior of said container throngsaid container receiver means for dischar ing the contents of saidcontainer when said rotor is rotated by said motor.

2. A portable sprayer of the type adapted to be held in a hand of anoperator for use and driven by an electric motor, said sprayercomprising a motor casmg and a compressor casing and a liquid containerarranged in t engaged vertical axial alinement with the motor casing atthe top and with the liquid container providing a supporting base at thebottom, a pistol-like handle connected to said motor casing, a rotor insaid compressor casing connected-to the shaft of the motor, containerreceiver means connecting said compressor casing and said container, andconduit means communicating with the interior of'said container receivermeans for dischar ing the contents of said container when sald rotor isrotated by the motor.

- In testimony whereof I have hereunto subscribed my name at Chicago,Cook County,

Illinois. v

' ADAM A. BREUER.

